| | | |
| June 12, 2018 | W | Bourne Braves 9 at Yarmouth-Dennis Red Sox 10 | Final |
| June 13, 2018 | T | Chatham Anglers 1 at Yarmouth-Dennis Red Sox 1 | Final |
| June 14, 2018 | L | Yarmouth-Dennis Red Sox 4 at Orleans Firebirds 5 | Final |
| June 15, 2018 | W | Yarmouth-Dennis Red Sox 4 at Harwich Mariners 1 | Final |
| June 16, 2018 | L | Falmouth Commodores 8 at Yarmouth-Dennis Red Sox 0 | Final |
| June 17, 2018 | L | Yarmouth-Dennis Red Sox 4 at Cotuit Kettleers 5 (Game 1) | Final (7) |
| June 17, 2018 | L | Yarmouth-Dennis Red Sox 3 at Cotuit Kettleers 11 (Game 2) | Final (7) |
| June 19, 2018 | T | Yarmouth-Dennis Red Sox 4 at Brewster Whitecaps 4 | Final |
| June 20, 2018 | W | Yarmouth-Dennis Red Sox 1 at Falmouth Commodores 0 | Final |
| June 21, 2018 | W | Cotuit Kettleers 1 at Yarmouth-Dennis Red Sox 6 | Final |
| June 22, 2018 | W | Harwich Mariners 1 at Yarmouth-Dennis Red Sox 12 | Final (8) |
| June 23, 2018 | | Yarmouth-Dennis Red Sox at Bourne Braves | Ppd. |
| June 24, 2018 | L | Wareham Gatemen 10 at Yarmouth-Dennis Red Sox 4 (Game 1) | Final (7) |
| June 24, 2018 | W | Wareham Gatemen 3 at Yarmouth-Dennis Red Sox 4 (Game 2) | Final (7) |
| June 26, 2018 | W | Orleans Firebirds 4 at Yarmouth-Dennis Red Sox 10 | Final |
| June 27, 2018 | W | Yarmouth-Dennis Red Sox 3 at Harwich Mariners 2 | Final (11) |
| June 29, 2018 | L | Yarmouth-Dennis Red Sox 2 at Chatham Anglers 5 | Final |
| June 30, 2018 | W | Cotuit Kettleers 1 at Yarmouth-Dennis Red Sox 4 | Final |
| July 1, 2018 | W | Yarmouth-Dennis Red Sox 6 at Wareham Gatemen 5 | Final |
| July 3, 2018 | W | Brewster Whitecaps 10 at Yarmouth-Dennis Red Sox 12 | Final |
| July 4, 2018 | W | Yarmouth-Dennis Red Sox 7 at Hyannis Harbor Hawks 2 | Final |
| July 5, 2018 | T | Hyannis Harbor Hawks 7 at Yarmouth-Dennis Red Sox 7 | Final (8) |
| July 6, 2018 | | Harwich Mariners at Yarmouth-Dennis Red Sox | Ppd. |
| July 7, 2018 | T | Yarmouth-Dennis Red Sox 6 at Brewster Whitecaps 6 | Final |
| July 8, 2018 | W | Chatham Anglers 1 at Yarmouth-Dennis Red Sox 10 | Final |
| July 9, 2018 | L | Falmouth Commodores 6 at Yarmouth-Dennis Red Sox 3 | Final |
| July 11, 2018 | L | Yarmouth-Dennis Red Sox 1 at Brewster Whitecaps 6 | Final |
| July 12, 2018 | W | Orleans Firebirds 8 at Yarmouth-Dennis Red Sox 11 | Final |
| July 13, 2018 | W | Yarmouth-Dennis Red Sox 4 at Falmouth Commodores 2 | Final |
| July 14, 2018 | W | Brewster Whitecaps 2 at Yarmouth-Dennis Red Sox 7 | Final |
| July 15, 2018 | W | Yarmouth-Dennis Red Sox 5 at Chatham Anglers 3 | Final (8) |
| July 17, 2018 | W | Yarmouth-Dennis Red Sox 5 at Orleans Firebirds 2 | Final |
| July 18, 2018 | L | Yarmouth-Dennis Red Sox 3 at Bourne Braves 6 | Final |
| July 19, 2018 | W | Bourne Braves 2 at Yarmouth-Dennis Red Sox 8 | Final |
| July 20, 2018 | L | Brewster Whitecaps 7 at Yarmouth-Dennis Red Sox 3 | Final |
| July 21, 2018 | L | Yarmouth-Dennis Red Sox 3 at Chatham Anglers 7 | Final |
| July 24, 2018 | W | Yarmouth-Dennis Red Sox 5 at Wareham Gatemen 0 | Final |
| July 25, 2018 | W | Orleans Firebirds 4 at Yarmouth-Dennis Red Sox 8 | Final (8) |
| July 27, 2018 | T | Chatham Anglers 4 at Yarmouth-Dennis Red Sox 4 | Final (8) |
| July 28, 2018 | W | Yarmouth-Dennis Red Sox 8 at Harwich Mariners 5 | Final |
| July 29, 2018 | W | Harwich Mariners 1 at Yarmouth-Dennis Red Sox 8 | Final |
| July 31, 2018 | W | Yarmouth-Dennis Red Sox 2 at Orleans Firebirds 0 | Final |
| August 1, 2018 | L | Hyannis Harbor Hawks 6 at Yarmouth-Dennis Red Sox 2 | Final |
| August 2, 2018 | W | Yarmouth-Dennis Red Sox 9 at Hyannis Harbor Hawks 1 | Final |
| August 4, 2018 | | Brewster Whitecaps at Yarmouth-Dennis Red Sox (Playoff Gm. 1) | Ppd. |
| August 5, 2018 | L | Brewster Whitecaps 5 at Yarmouth-Dennis Red Sox 4 (Playoff Gm. 1) | Final |
| August 6, 2018 | L | Yarmouth-Dennis Red Sox 2 at Brewster Whitecaps 12 (Playoff Gm. 2) | Final |
Yarmouth-Dennis Red Sox Schedule
